Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Category
Browse organic gemstone (succinite) specimens identified by the Rock Identifier community.
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
Amber
Succinicum (Organic compound, primarily C10H16O)
Precious Coral
Corallium rubrum (Calcium carbonate with trace carotene)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Pearl
Calcium carbonate (CaCO3) in the form of Aragonite or Calcite
Amber
Succinate (Fossilized Tree Resin)
Pearl (with Peridot)
Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4
Red Jasper
Silicon Dioxide (SiO2)
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
Black Pearl (Tahitian Type)
Aragonite / Pinctada margaritifera (CaCO3 + Conchiolin)
Black Freshwater Pearls
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Amber
Succinicum (Formula: C10H16O)
Pearl (likely Freshwater or Akoya Cultured)
Aragonite / Conchiolin composite (CaCO3)
Pearl
Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3
Jasper
Jasper (Silicon Dioxide, SiO2)
Shungite
Non-crystalline carbonoid (Shungite)
Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite organic gemstone
Petrified Wood
Silicified Wood (SiO2)
Chert (often called Flint)
Chert (Silicon Dioxide, SiO2)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
Jasper
Silicon dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Amber with inclusion
Amber (Fossilized Tree Resin)
Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite
Red Chert
Microcrystalline Quartz (SiO2)
Chert (White Flint)
Silicon Dioxide (SiO2)
Red Coral
Corallium rubrum
Chert (Iron-stained or Dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Amber
Fossilized Tree Resin (Generic formula roughly C10H16O)
Chert (Black Chert / Flint)
Silicon Dioxide (SiO2)
Chert (Jasper transition)
Microcrystalline Quartz (SiO2)
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Nodular)
Microcrystalline Silica (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Mudstone)
Microcrystalline Quartz (SiO2)
Pearl
Calcium Carbonate (Aragonite/Calcite mixed with Conchiolin), CaCO3
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
Amber
Succinicum (Organic polymer, largely C10H16O)
Moss Agate
Chalcedony (Silicon Dioxide - SiO2) with inclusions